Abstract:
The study was conducted in the field of' Sher-e-Bangla Agricultural University,
Dhaka, Bangladesh during October 2007 to April 2008 to find out the effect of
nitrogen on the growth and yield of tomato varieties. The experiment consisted of two
factors viz., Factor A: Four level of nitrogen (N0: Control. N1 : 200 kg N/ha. N2: 230
kg N/ha and N3
: 260 kg N/ha) and Factor B: Three tomato varieties (V1 : BARI
Tomato 1. V,: BAR! Tomato 2 and V
3: BART Tomato 3). The experiment was laid out
in two factors Randomized Complete Block Design (RCBD) with three replications.
In case of nitrogen, highest number of fruits per plant (36.70). maximum diameter of
fruit (3.47 cm) and the highest yield (83.62 i/ha) was observed from N2
and the lowest
value was observed from N
o
. In case of varieties, the highest number of fruits per
plant (39.03). maximum diameter of fruit
(3.45 cm) and the highest yield (81.50 tlha)
was
recorded from
V2 again the lowest value was found from V1 . For the interaction
effect of nitrogen and varieties, the highest number of fruits per plant (41.87). the
maximum diameter of fruit (3.59 cm) and the highest yield (88.00 i/ha) was recorded
from N
2V2
and the lowest value was recorded from N0V1 . The highest benefit cost
ratio (2.44) was recorded from
N2V2
and lowest (1.87) was obtained from N0V1 . From
economic point of view, it is apparent from the above results that the combination of
230 kg N/ha and BAR! Tomato 2 was more profitable than rest of the treatment
combination.
